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PartsTable / COMPONENT / 93620-166
93620-166 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, hole_diameter: 0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN, hardness_rating: 90.0 ROCKWELL B MINIMUM, outside_diameter: 0.493 INCHES NOMINAL IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: NICKEL OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-550-1675, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
93620-166
NSN: 5310-00-550-1675
FSC: 5310
CAGE: 02734 — LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN AEROSTRUCTURES DIV ADVANCED TECHNOLOGY LABORATORIES (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
hardness_rating90.0 ROCKWELL B MINIMUM
outside_diameter0.493 INCHES NOMINAL IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentNICKEL OVERALL
material_thickness0.062 INCHES NOMINAL IN
nondefinitive_spec/std_data2 STYLE AND E CLASS
departure_from_cited_documentAS MODIFIED BY FINISH
NSN5310-00-550-1675
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 93620-166 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: COPPER ALLOY OVERALL
•
SURFACE TREATMENT: NICKEL OVERALL
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY FINISH
•
OUTSIDE DIAMETER: 0.493 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.062 INCHES NOMINAL IN
•
HARDNESS RATING: 90.0 ROCKWELL B MINIMUM
•
HOLE DIAMETER: 0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY OVERALL
SURFACE TREATMENTNICKEL OVERALL
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY FINISH
OUTSIDE DIAMETER0.493 INCHES NOMINAL IN
MATERIAL THICKNESS0.062 INCHES NOMINAL IN
HARDNESS RATING90.0 ROCKWELL B MINIMUM
HOLE DIAMETER0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA2 STYLE AND E CLASS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
FFW84CLASSESTYLE2Interchangeable
interchangeable cross-reference
interchangeable
310008000Interchangeable
interchangeable cross-reference
interchangeable
HP799P10MInterchangeable
interchangeable cross-reference
interchangeable
107222Interchangeable
interchangeable cross-reference
interchangeable
93620-162Interchangeable
interchangeable cross-reference
interchangeable
323605PC12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 93620-166?
93620-166 is a WASHER,LOCK.
What parts can replace 93620-166?
There are 19 known substitutes for 93620-166: FFW84CLASSESTYLE2, 310008000, HP799P10M and 16 more. Substitute compatibility should be verified for your specific system.
Is 93620-166 still available?
93620-166 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026